package cn.tedu.csmall.passport.security;

import cn.tedu.csmall.passport.mapper.AdminMapper;
import cn.tedu.csmall.passport.pojo.vo.AdminLoginInfoVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;

@Slf4j
@Service
public class UserDetailsServiceImpl implements UserDetailsService {

    @Autowired
    private AdminMapper adminMapper;

    @Override
    public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException {
        log.debug("Spring Security框架自动调用UserDetailsServiceImpl中的loadUserByUsername方法，参数：{}", s);
        AdminLoginInfoVO admin = adminMapper.getLoginInfoByUsername(s);
        log.debug("从数据库中根据用户名【{}】查询管理员信息，结果：{}", s, admin);
        if (admin == null) {
            log.debug("没有与用户名【{}】匹配的管理员信息，即将抛出BadCredentialsException", s);
            String message = "登录失败，用户名不存在！";
            throw new BadCredentialsException(message);
        }

        UserDetails userDetails = User.builder()
                .username(admin.getUsername())
                .password(admin.getPassword())
                .disabled(admin.getEnable() == 0)
                .accountLocked(false) // 此项目未设计“账号锁定”的机制，固定为false
                .accountExpired(false) // 此项目未设计“账号过期”的机制，固定为false
                .credentialsExpired(false) // 此项目未设计“凭证锁定”的机制，固定为false
                .authorities("暂时给出的假的权限标识") // 权限
                .build();
        log.debug("即将向Spring Security框架返回UserDetails对象：{}", userDetails);
        return userDetails;
    }

}
